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Fuel pumps fail for a few reasons. The diaphrams leak (generally when exposed to fuel with high concentrations of alcohol) The valves stop sealing well (varnish, dirt, rust from old tanks,etc). the springs get rusty and lose their abilty to draw fuel through the varnish encrusted orifices, etc. Personally, I'd purchase the electronic fuel pump kit through Indigo and empty the tank, spin on a new separator/filter put enough 90 octane gas in the tank to make it back from my longest day trip, carry a spare can and enjoy the rest of the season.
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